Another candidate has announced the bid to fill a seat vacated by state Sen. Larry Bliss of South Portland.

Attorney Paul Aranson of Scarborough filed with the Maine Ethics Commission as a Democrat for the Senate District 7, representing Cape Elizabeth, South Portland and part of Scarborough. Rob Schreiber, an adjunct faculty member at Southern Maine Community College, and Rep. Cynthia Dill, D-Cape Elizabeth, have already announced they are interested in Democratic nomination for candidacy.

The Cumberland County Democratic Committee will meet at 7 p.m. Tuesday in South Portland’s council chambers to nominate one candidate for the election.

Republican Joe Palmieri of South Portland has also filed with the Maine Ethics Commission. Bliss was re-elected in November, defeating Palmieri by a margin of 75 votes.

Bliss, who is resigning to take an out-of-state job, will serve his last day April 15. A special election to fill the spot will be held May 10.